Key points are not available for this paper at this time.
Malfertheiner, P.; Mégraud, F.; O'Morain, C.; Bell, D.; Porro, Bianchi G.; Deltenre, M.; Forman, D.; Gasbarrini, G.; Jaup, B.; Misiewicz, J. J.; Pajares, J.; Quina, M.; Rauws, E. for the European Helicobacter Pylori Study Group (EHPSG)
Malfertheiner et al. (1997) studied this question.